Table 4

COX-2 expression in 23 ESCC from Iran determined by immunohistochemistry

COX-2 composite staining scorea
0123
Tumors with p53 mutationb (n = 15)00411
Tumors without p53 mutationb (n = 8)6020
  • a Composite score of staining intensity and percentage of positively stained tumor cells (see ‘Materials and Methods’).

  • b Correlation of p53 tumor mutation with COX-2 expression, P < 0.0005, Fisher’s exact test.